Game is slower than a normal speed even the speed is full

Question

I,m a cncnet user and use to play yuri,s revenge(r a 2) there.It was running good but since a few days ago,i,m facing a problem.When i play online with anyone,my game becomes slow(not laggy).Seems like it is running on low speed such as 45 fps.But i checked the game speed and it shows full speed.It happens only when i play online.When i play offline(skirmish),there is no problem there.So Kindly help me please because no one wants a slow game in his room so i,m facing a big problem.I have reinstalled the client many times(also reinstalled the windows 2 times).Reinstalled the game too.

New to forums.
I'm sure some may recognize my nick.
Since this newest update, my CNCnet will not run. Right click on the program, click on "run as admin" and it's as if nothing happened. The game doesn't even attempt to run, and it does not give me a message. Tried restarting PC, re-installing the game to no avail. Any help or advice would be appreciated.